title: PPLN-based OOK and DQPSK optical grooming by amplitude and phase-signal multiplexing through pump depletion.
abstract: We propose and characterize a simple, integrable, and wavelength-preserving scheme able to groom a 40 Gbps (D)QPSK signal with a 20 Gbps OOK one into a 20 Gbaud (60 Gbps) 8-APSK signal. The proposed all-optical scheme is based on the second-order nonlinear signal-depletion effect in a single periodically poled lithium niobate (PPLN) waveguide. Performance of the device, characterized by means of BER measurements, attests error-free operation and a power penalty below 4.1 dB.
authors.forename: Sergio
authors.initials: S
authors.lastname: Pinna
authors.forename: Antonio
authors.initials: A
authors.lastname: Malacarne
authors.forename: Emma
authors.initials: E
authors.lastname: Lazzeri
authors.forename: Antonella
authors.initials: A
authors.lastname: Bogoni